centos man page for fdetach

FDETACH(3P)						     POSIX Programmer's Manual						       FDETACH(3P)

PROLOG
       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME
       fdetach - detach a name from a STREAMS-based file descriptor (STREAMS)

SYNOPSIS
       #include <stropts.h>

       int fdetach(const char *path);

DESCRIPTION
       The fdetach() function shall detach a STREAMS-based file from the file to which it was attached by a previous call to fattach().  The  path
       argument  points to the pathname of the attached STREAMS file. The process shall have appropriate privileges or be the owner of the file. A
       successful call to fdetach() shall cause all pathnames that named the attached STREAMS file to again name the file  to  which  the  STREAMS
       file was attached. All subsequent operations on path shall operate on the underlying file and not on the STREAMS file.

       All  open file descriptions established while the STREAMS file was attached to the file referenced by path shall still refer to the STREAMS
       file after the fdetach() has taken effect.

       If there are no open file descriptors or other references to the STREAMS file, then a successful call to fdetach() shall be  equivalent	to
       performing the last close() on the attached file.

RETURN VALUE
       Upon successful completion, fdetach() shall return 0; otherwise, it shall return -1 and set errno to indicate the error.

ERRORS
       The fdetach() function shall fail if:

       EACCES Search permission is denied on a component of the path prefix.

       EINVAL The path argument names a file that is not currently attached.

       ELOOP  A loop exists in symbolic links encountered during resolution of the path argument.

       ENAMETOOLONG
	      The size of a pathname exceeds {PATH_MAX} or a pathname component is longer than {NAME_MAX}.

       ENOENT A component of path does not name an existing file or path is an empty string.

       ENOTDIR
	      A component of the path prefix is not a directory.

       EPERM  The effective user ID is not the owner of path and the process does not have appropriate privileges.

       The fdetach() function may fail if:

       ELOOP  More than {SYMLOOP_MAX} symbolic links were encountered during resolution of the path argument.

       ENAMETOOLONG
	      Pathname resolution of a symbolic link produced an intermediate result whose length exceeds {PATH_MAX}.

       The following sections are informative.

EXAMPLES
   Detaching a File
       The  following  example	detaches the STREAMS-based file /tmp/named-STREAM from the file to which it was attached by a previous, successful
       call to fattach(). Subsequent calls to open this file refer to the underlying file, not to the STREAMS file.

	      #include <stropts.h>
	      ...
		  char *filename = "/tmp/named-STREAM";
		  int ret;

		  ret = fdetach(filename);

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       fattach(), the Base Definitions volume of IEEE Std 1003.1-2001, <stropts.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and  the  original  IEEE
       and  The  Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003							       FDETACH(3P)